Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > nn0ex | Structured version Visualization version Unicode version |
Description: The set of nonnegative integers exists. (Contributed by NM, 18-Jul-2004.) |
Ref | Expression |
---|---|
nn0ex |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-n0 11293 | . 2 | |
2 | nnex 11026 | . . 3 | |
3 | snex 4908 | . . 3 | |
4 | 2, 3 | unex 6956 | . 2 |
5 | 1, 4 | eqeltri 2697 | 1 |
Copyright terms: Public domain | W3C validator |